This reference design illustrates a 54V, 5kW input power path protection circuit for AI-powered data centers, utilizing one TPS1689 and five TPS1685 eFuse devices in parallel. These integrated high- current circuit protection devices provide multiple protections using a few external components, serving as a robust defense against overloads, short circuits, and excessive inrush current. The integrated PMBus® interface in the TPS1689 eFuse enables real-time monitoring, control, and configuration. Three devices are located on the top layer, three on the bottom layer.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Design guide | 54V 5kW Power Path Protection Reference Design for AI Data Centers Using TPS1689 and TPS1685 eFuses | PDF | HTML | Feb 25, 2026 |
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